Grade-indicator.



W. L. TAYLOR & R. G. NEWTON.

GRADE INDICATOR.

APPLICATION FILED MAR. 21, 1914.

L1 66,@ 1 9 Patented 1m. 28, 191.5.

I, wucuf 01,3 QMZM 5 E a/i201 Q/UH 14-00mm WALTER'L. TAYLOR, OF BOYD,OKLAHOMA, ROBERT G. NElii/TON, BU'ItLINGHl.ME,

' KANSAS.

sennn-mniceaon.

' laconic.

To all whom it may concern:

Be it known that We, WALTER L. TAYLOR,

Our invention relates to an improved de vice or indicator to be used inconnection with a line extending in a plane interme diate the horizontaland vertical to determine, in inches, the rise or fall of a grade, tothe foot. i

As its primary object, the invention contemplates a simple, ellicientand exacting. device to be used not only as a means for determining orfinding the pitch of a grade, but also as a bob for use in connectionwith plumb lines and the like. i I

The above and additional. objects are ac complished by such means asillustrated in their preferred embodiment in the acconr panyingdrawings, described in the follmving' specification and then moreparticularly pointed out in the claim which is appended hereto and formsa part of this application.

In describing our invention. in detail re't' erence will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is an elevation of an indicating device constructed in acc rdance withthe present invention; F is a section on the line 22 of Fig. 1 and Fi 3is a fragmentary rear elevation of the device illustrz'iting in detailthe manner in which the attaching elements are connected thereto.

Referring now to the drawings by numerals, 1 designates, as an entirety,the device, the same comprising a semi-circular latelike body portionfi, one iaceot which 1s provided with indicating marks 3 disposed inradial relation and to extend in predetermined relation with respect toeach other and with respect to a line 4 extending at a' 90 angle to thestraight edge 5 of the dial.

Specifics tion oi Letters Patent.

Ltaterted 28, :iaio.

Application filed March 21, 1914, Serial No. 826,356.

vhich, in the practical application 01": the invention, is oscillatablefrom the pivot pointi' to indicate, through the medium of suit-' ableindicating element 10, upon the dial, the pitch in inches to the foot ofthe grade unoer observation. mentor hand 11 is provided, said elementtraversing the front face of the dial and being rigid with the pivot pinTend parallel with the arm 6.

An enlargement or projection 12 is formed,

at each end of the straight edge 5, which onlargements or' projectionsform, with members 3 pi ited as at i i to the body 2, fasten.- ing ttans whereby the device may be sus pended frr a line or the likeextending in a plane intei'niediate the vertical and horizontal. Saidmembers 13 are substantially hook-shaped, the hholced portion extendingover the respectire nrojections 12 to clamp or fasten the line thereto.

In actual practice, the device may be used as tollon 's: l'Vhen it isdesired, that the pitch of a ascertained, the device is suspended from aline orv the like suitably supported thereupon, such suspension of thedevice being readily eiiected by the arrange incnt of the members 13over the line. lVhen thus suspended, the plumb bob?) will, by itsweight, traverse the periphery of the dial to indicate thereupon,through the medium of the elements 10 and. 11, the number of inches tothe foot the grade under observation A. second indicating ele' may besuspended at- 4 .1 c s 1 '5'. .t! s r we can or a plume .ine ior anOlJHOUS purpose; that the extent of rise or fall of grades varying inpit iil may oe readily determined;

and that both indicating elements move in unison, one opera over theperiphery the dial and the other traversing the front face thereof in a,manner apparent upon reference to Fig. 1 of the drawings.

In reduction to practice, We have found that the form ofgopr invention,iliustrated in the drynvings and referred to, in the above description,as the preferred embodiment, is the most etiicient and practical; yetrealizing that the conditions concurrent with the adoption of our devicewill necessarily vary,

we desire to emphasize the fact that various minor changes in details ofconstruction, proportion and arrangement oi, parts may be resorted to,when required, without sacrificing any of the advantages of ourin\'ention, as defined in the appended claim.

Having thus fully described our invention, what we claim as new anddesire to secure by Letters Patent, is 1- In a device of the characterdescribed, a

semi-circular body portion having graduations on the circular peripherythereof, the opposite edge being straight and terminating in raisedportions hook members pivoted to the body and having their hookedextremities extending over and engaging with the raised portions to holda line passed between the hooks and body, intermediate the raisedportions a pivoted arm, a bob connectcd to the free end of said arm, apointer mounted on the bob and parallel with the pivoted arm, and apointer connected to the point of pivot oi the said arm and inparallelism with the pivoted arm and pointer carried by the bob.

In testimony whereof we attix our signatures in presence of witnesses.

\VALTER L. TAYLOR. ROBERT Gr. NEWTON.

\Vitnesses Com Fnn GRAY, LU SHALLENBERGER, Roor C. S'ran'mrom),

\V. C. SMITH.

